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Old 04-05-2015, 10:31   #1
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Calculate distance and bearing between two positions

Hello all,

I am looking for an easy, offline way of calculating the distance and bearing between two points. I found one in the net but it is a little too math to me.

Does anyone know of a simple, downloadable formula, preferably in Excel?

Thanks in advance

Luis Serpa
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Old 04-05-2015, 11:20   #2
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Re: Calculate distance and bearing between two positions

The way that your question is written, I don't think you will get many answers.

The simplest way is with a chart, dividers, parallel ruler, and the compass rose.

If you are saying you know your own location and the distance to two points, but not their distance from each other, then you can use any online triangle calculator to get the distance between those two points, as well as the angle of any of the corners of the triangle, from which, if you know the bearing of one of the points from you, you can calculate the bearing from one of the points to the next.

As I said, it is really not clear enough what you are trying to do.

Pete
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Old 04-05-2015, 11:22   #3
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Re: Calculate distance and bearing between two positions

What about this

Calculate distance and bearing between two Latitude/Longitude points using haversine formula in JavaScript
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Old 04-05-2015, 12:00   #4
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Re: Calculate distance and bearing between two positions

Enter both WPTs into a handheld and read the bearing and distance.

Or use cosine from lat long difference allowing for lat adjusted length of one degree of lat long.

Or use haversine formula for longer distances over the ortho.

There are many ways so it depends on what you want to do and how big the distances are.

b.
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Old 04-05-2015, 14:17   #5
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Re: Calculate distance and bearing between two positions

Unless you are on a powerbeat or running dead downwind, remember that you may be tacking and that can add 40% to the distance you'll actually have to be traveling.
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Old 04-05-2015, 15:18   #6
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Re: Calculate distance and bearing between two positions

Starpath had a wind calculator you can download....I use it for all sorts of things.

Just plug in a number or two and it gives you all the parts of a triangle.

Didn't see it when I just looked it up at Starpath navigation...but maybe it was for Windows not android and I don't have my other computer right now.
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